Car-truck.



J. C. BARBER.

GAR TRUCK.

APPLIUATION FILED APR. 16, 1909.

Patented Oct. 5, 1909. 4 SHEETS-SHEET 1.

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J. C. BARBER.

GAR TRUCK,

APPLIUATION FILED APR. 1e, 1909.

Patented Oct. 5, 1909.

4 SHEETS-SHEET 2.

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J'. C. BARBER.

GAB, TRUCK.

API-LIUATION FILED APR. 16, 1909.

Patented Oct. 5, 1909.

' 4 SHEETS-SHEET 3.

J. G. BARBER.

GAR TRUCK.

APPLIOATION FILED APB. 1e, 1909.

Patented Oct. 5, 1909.

' SHEETS-SHEET 4.

'M NJLJDAU @li-hihi@ ITA )L MAIN i' U@ 'lik/'lila JOHN C. BARBER, OFCHICAGO, ILLINOIS.

CAR-TRUCK.

Specification of Letters Patent.

Patented Oct. 5, 1909.

To all whom it may concern:

Be it known that I, Jol-IN C. BARBER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Car-Trucks; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the saine.

My invention has for its object to provide a car truck which, while ofsimple and comparatively cheap construction, will, nevertheless, havevery great strength and durability.

To the above ends, the invention consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

In car truck construction it has been customary to support the truckbolster from the side frames of the car truck through groups of coiledsprings in rectangular or similar arrangement, with some of the springslocated either on the outer side or the inner side of the side frames ofthe truck.

In all car trucks, and especially in those designed to carry the veryheavy loads required for the present railway freight service, it ishighly important that the load be transmitted from the truck bolster tothe truck side frames without producing torsional strains on the latter.This is accomplished in the present invention by placing the bolstersupporting springs in tandem arrangement longitudinally of the truck andwithin the limits or transverse dimensions of such side frames.Otherwise stated, the said springs are arranged in a straight row andare seated between laterally spaced plates or members which form partsof the truck side frames. This tandem arrangement of the springs alsopermits the use of a truck bolster having very wide end portions andcorrespondingly wide supporting bearings which increase the ability ofthe bolster to withstand oscillatory movements or rocking movementstransverse of its longitudinal axis. This latter feature is also highlyimportant in heavy car construction.

In the accompanying drawings, which illustrate the improved truck in itspreferred form, like characters indicate like parts throughout theseveral views.

Referring to the drawings, Figure l is a view in side elevation, showingthe improved car truck, some parts being indicated in diagram only andsome parts being removed; Fig. 2 is a view partly in transverse verticalsection and partly in end elevation, showing' the improved car truckwith the wheels and certain other parts removed; Fig. 3 is a plan viewshowing one side of the truck and approximately one-half of. the truckbolster', some parts being removed; Fig. L is a detail in horizontalsection taken on the line m4 zu* of Fig. l; Fig. 5 is a fragmentarydetail in plan, showing a portion of one side of the truck frame; Fig. 6is a plan view of one of the so-called bridge bars removed from thecoperating truck side frame; and Figs. 7 and 8 are views, respectively,in side and front elevation of the bridge bar, best shown in Fig. 6.

In this preferred construction, each side frame of the truck is made upof a pair of laterally spaced parallel steel channel bars l and a pairof cast steel end brackets 2. These end brackets 2 have dependingflanged portions that serve to space apart the ends of the channel barsl and are rigidly secured to the vertical webs thereof by rivets 3.Above the channel bars l, the end brackets 2 are provided with extendedribbed arms 4C that rest upon the cooperating car axle boxes 5, one ofwhich is shown diagrammatically at the right in Fig. l. The innersurfaces of the axle boxes 5 bear directly against the verticallyextended outer edges of the adjacent end brackets 2. The bottoms of theaxle boxes 5 are engaged by short independently detachable bottom bars 6shown as detachably secured to the horizontal lowermost webs 2a of therespective end brackets 2 see particularly Figs. 2 and 4). The axleboxes are secured to the arms 4E and detachable bars 6 of thecooperating end brackets 2 by long vertically extended bolts 8, as shownat the right in Fig. l.

The numeral 9 indicates the wheels diagrammatically, said wheels beingsecured to axles l0 and the latter being journaled in the boxes 5 in thecustomary or any suitable way.

When the bolts 8 are removed, the axle box may be moved horizontally outfrom its seats between the arm i and bar 6. When the bar 6 is detachedfrom the coperating i bracket 2, the truck frame may be jacked up l olffrom the axle boxes.

At their inner end portions, extending chiefly above but partly belowthe upper edges of the channel bars 1, the end brackets 2 are formedwith vertically extended bolster guiding or chaiing surfaces 11. Thesaid surfaces 11, in fact, take the place of socalled bolster columnswhich are provided in most types of car trucks. The space between theupper extremities of the bolster guiding surfaces 11 is spanned by aso-called bridge bar 12, the ends of which overlap with and aredetachably secured to the flanged upper edge portions of the brackets 2,by short nutted bolts 13. Brake hanger lugs 14, having projecting pins15, are shown as cast integral with the bridge bar 12. The projectingends of the lugs 111 (see F ig. 3) project inward so that theyconstitute stops for limiting the endwise movements of the truck bolster16 transversely of the truck.

The outturned lower flanges of the coperating channel bars 1 are rigidlytied together by a metal tie plate 17 shown as secured thereto by rivets1S. A spring base 19, which, as shown, is of inverted channel form,rests directly upon the tie plate 17 of each truck side frame and, asshown, is provided with upturned ears 19tL that are directly riveted tothe vertical webs of the channel bars 1 between which they are placed.Transversely crossed tie bars 20 connect the lower portions of the twoside frames of the truck and are preferably rigidly connected at theirends to the tie plate 17 and lower flanges of the channel bars 1, byrivets 21.

The coiled bolster supporting springs 22 are placed in tandem, inupright positions, between the channel bars 1 and are seated at theirlower ends directly upon the coperat` ing spring bases 19. As shown,there are four of these bolster supporting springs 22 thus mounted ineach of the laterally spaced side frames of the truck; and seated oneach set of springs is a combined spring cap and roller base 23 that isalso arranged to work in the pocket or cage formed between the laterallyspaced channel bars 1 and longitudi` nally spaced vertical surfaces 11of the two end brackets 2.

Bearing rollers 25 are placed in concave seats formed in the tops of thecombined spring caps and roller bases 23, and these rollers engage withother concave seats 26 formed in the under surfaces of the end portions27 of the bolster 16.

It is here important to note that the ends 27 of the bolster 16 areextended and made wider than the bolster body and that the roller bases23 and rollers 25 are materially longer than the width of the said truckbolster 16. This gives a very wide base support for the truck bolsterand, as above indicated, supports the same in such manner that it isfirmly held against oscillation in a direction longitudinal of the truckor around its own longitudinal axis. It will also be observed that theload is transmitted from the truck bolster to the lower portions of thetruck side frames and at points transversely midway between the channelbars 1. Otherwise stated, the strains transmitted from the truckbolsters to the truck side frames are delivered in vertical planesextending longi` tudinally of the truck centrally of the said sideframes, so that the said side frames are relieved from torsional strainsor, in other words, from strains which would tend to throw the same outof true vertical positions. This, as is evident, gives a maximumstrength with a minimum of material.

By reference to F ig. 3, it will be noted that the brake hanger lugs1-/1 stand in position to engage with the transifersely extended ends 27of the truck bolster 16 and to thereby limit the endwise movements ofsaid bolster transversely of the car.

1n Fig. 2, the numeral 28 indicates, as an entirety, a center bearingfor connecting the truck bolster 16 to the car or body bolster, notshown. The numeral 29 indicates side bearing lugs shown as cast on thebolster 16. The said bolster' 16 is shown as a cast steel bolster', but,so far as the present invention is concerned, it might be made in anyother suitable way.

Vhen the bolster is to be removed from the car truck, it is, with theconstruction illustrated, necessary first to remove the socalled bridgebars 12 from the truck side frames, and this being done, the bolster maybe lifted from working position. l/Vhen the bridge bars are applied, thetruck bolster is held interlocked to the truck frame with freedom forlimited vertical and endwise movements.

Vhat 1 claim is:

1. The combination with a truck having side frames made up of laterallyspaced beams and longitudinally spaced end brackets rigidly connectedthereto, of coiled bolster supporting springs arranged in tandem andseated in said side frames between the laterally spaced beams thereof,bridge bars detachably secured to and connecting the upper inner endportions of said end brackets, and a truck bolster supported by saidsprings with its ends working in the seats therefor formed in the sideframes between the cooperating end brackets, beams and bridge bars.

2. The combination with a car truck having side frames made up oflaterally spaced beams, longitudinal spaced end brackets and bridge barsdetachably secured to and connecting the upper inner end portions ofsaid end brackets, of spring bases located between and rigidly securedto the lower portions of said laterally spaced frame beams, uprightcoiled springs arranged in tandem and seated on said spring basesbetween the coperating laterally spaced frame side beams, combinedspring caps and roller bases seated on said springs and arranged to workvertically between said laterally spaced frame beams and longitudinalspaced end brackets, rollers seated on said combined spring caps androller bases, and a truck bolster having widened end portions seated onsaid rollers and working in the seats formed therefor in said sideframes between the connected end brackets, frame, beams and bridge bars.

3. The combination with a car truck having side frames formed withlongitudinally extended pockets, with transversely eX- tended bolsterpassages above said pockets, and detachable bridge bars above said bolster passages, of springs in tandem arrangement in said pockets,combined spring caps and roller bases seated on said springs, rollersthereon, and a truck bolster having its ends mounted on said rollers andworking within the bolster passages of said side frames.

4. In a car truck, the combination with frames having inwardlyprojecting brake hanger lugs, of a bolster mounted for vertical andendwise movements in said truck frame and having widened ends engageablewith said hanger lugs to limit the endwise movement of the bolstertransversely of the truck.

5. The combination with a truck having spring pockets in its side frame,of detachable bridge bars applied to said side frames above said pocketsand provided with brake hanger lugs, of springs in the pockets of saidside frames, and a truck bolster supported by said springs for limitedvertical and endwise movements and provided with widened end portionswith which the hanger lugs of said detachable bridge bars are engageableto limit the endwise movements of the bolster transversely of the truck.

In testimony whereof I aiiix my signature in presence of two witnesses.

JOHN C. BARBER. llitnesses LEE W BARBER, E. lV. VEBB.

